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Showing papers by "Sanjeev Setia published in 2000"


Proceedings ArticleDOI
14 May 2000
TL;DR: Kronos can be used in conjunction with distributed key management frameworks such as IGKMP (T. Hardjono et al., 1998) that use a single group-wide session key for encrypting communications between members of the group.
Abstract: The authors describe a novel approach to scalable group re-keying for secure multicast. Our approach, which we call Kronos, is based upon the idea of periodic group re-keying. We first motivate our approach by showing that if a group is re-keyed on each membership change, as the size of the group increases and/or the rate at which members leave and join the group increases, the frequency of rekeying becomes the primary bottle neck for scalable group re-keying. In contrast, Kronos can scale to handle large and dynamic groups because the frequency of re-keying is independent of the size and membership dynamics of the group. Next, we describe how Kronos can be used in conjunction with distributed key management frameworks such as IGKMP (T. Hardjono et al., 1998) that use a single group-wide session key for encrypting communications between members of the group. Using a detailed simulation, we compare the performance tradeoffs between Kronos and other key management protocols.

288 citations


Book ChapterDOI
01 May 2000
TL;DR: DyRecT (Dynamic Reconfiguration Toolkit) is a software library that allows programmers to develop adaptively parallel message-passing MPI programs for clusters of workstations and provides support for making a wider variety of applications adaptive by exposing to the programmer a low-level library that implements many of the typical tasks performed during reconfiguration.
Abstract: In this paper, we describe DyRecT (Dynamic Reconfiguration Toolkit) a software library that allows programmers to develop adaptively parallel message-passing MPI programs for clusters of workstations. DyRecT provides a high-level API that can be used for writing adaptive parallel HPF-like programs while hiding most of the details of the dynamic reconfiguration from the programmer. In addition, DyRecT provides support for making a wider variety of applications adaptive by exposing to the programmer a low-level library that implements many of the typical tasks performed during reconfiguration. We present experimental results for the overhead of dynamic reconfiguration of several benchmark applications using DyRecT.

13 citations